Rob, trying out this new function. I put config['edit_mode'] = 1; in my CONFIG.js, refresh the dashboard and I got on the left side a column with devices. I can drag one to the dashboard. When I push "SAFE" on the right-bottom, nothing happens. After a refresh the item is gone.

Rob, I tried some more trouble shooting/google on this.
Since it doesn't work on Pi and Synology installed Dashticz, it might be that I need a linux package/javascript update? Since all browsers/clients/phones/pads result in the same thing.